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Force and Laws of Motion

Science · Class 9 · All

ScienceClass 9AllEasy
Q1/14
45s

The property by which an object resists a change in its state of motion is called

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All 14 questions in this quiz

  1. Why do passengers fall forward when a moving bus stops suddenly?

    1. Due to gravity
    2. Due to friction
    3. Due to inertia of motion
    4. Due to momentum becoming zero instantly

  2. Which statement about balanced forces is correct?

    1. They always produce acceleration.
    2. They change the direction of motion.
    3. Their resultant force is zero.
    4. They always stop moving objects.

  3. A cricket player moves his hands backward while catching a fast ball because

    1. To increase the force on the hands
    2. To reduce the time of impact
    3. To increase the time of impact and reduce the force
    4. To increase momentum

  4. Which factor directly affects the inertia of an object?

    1. Speed
    2. Shape
    3. Mass
    4. Colour

  5. Which of the following is an example of Newton's Third Law?

    1. A book resting on a table
    2. Walking on the ground
    3. A stone lying on the road
    4. A stationary bicycle

  6. Newton's Third Law states that

    1. Force equals mass × acceleration.
    2. Every action has an equal and opposite reaction.
    3. Objects remain at rest unless acted upon.
    4. Momentum is always zero.

  7. If the net external force acting on an object is zero, the object will

    1. Always stop immediately
    2. Accelerate continuously
    3. Remain at rest or move with constant velocity
    4. Move in a circular path

  8. According to Newton's Second Law, force is equal to

    1. Mass × Velocity
    2. Mass × Acceleration
    3. Velocity × Time
    4. Mass ÷ Acceleration

  9. Momentum is equal to

    1. Mass × Acceleration
    2. Mass × Velocity
    3. Force × Distance
    4. Velocity ÷ Mass

  10. Which of the following has the greatest inertia?

    1. Football
    2. Cricket ball
    3. Loaded truck
    4. Tennis ball

  11. The property by which an object resists a change in its state of motion is called

    1. Force
    2. Momentum
    3. Inertia
    4. Velocity

  12. Newton's First Law of Motion is also known as the

    1. Law of Gravitation
    2. Law of Inertia
    3. Law of Conservation of Energy
    4. Law of Momentum

  13. Which of the following is the SI unit of force?

    1. Joule
    2. Newton
    3. Pascal
    4. Watt

  14. What is meant by force?

    1. A form of energy
    2. A push or pull acting on an object
    3. The speed of an object
    4. The mass of an object